To bisect the iPhone rotation bug from afar: - bios.mjs posts a camera:debug message (requested/actual dims, trackSettings, facingMode, iOS/Android, screen.orientation.angle, userAgent) right after getUserMedia succeeds, and a one-shot camera:debug:frame with the actual video.videoWidth/Height plus our needsRotation verdict once the first real frame arrives. - cap.mjs act() console.log()s both, so they land in piece-runs (MongoDB) and we can read them back with ac-piece-logs. - Added a URL override: ?camrot=0|cw|ccw|180 sets the rotation angle manually, and ?camforce=1 forces the rotation path even when dims-based detection says no. Lets the user quickly try every 90° option on device without another push cycle. Also: drop nohud=true from cap.mjs. The corner now shows the standard 'cap' label again instead of an empty top-left.